Oil surges toward $100, Canada fires back at the US, and Japan's GDP revision strengthens the case for another BOJ hike

This sits squarely in Economics HL, the macroeconomics unit — specifically the section on supply-side shocks and their effect on the aggregate supply (AS) curve. A Houthi strike that disrupts Saudi output is a negative supply shock to the global oil market: the short-run aggregate supply curve for oil-importing economies shifts left, raising the price level and reducing real output simultaneously — the classic stagflationary combination. The diagram you would draw is an AD-AS model where SRAS shifts left, the price level rises, and real GDP falls below the full-employment level. The causal chain is: physical disruption → reduced Saudi output → global supply tightens → oil price rises → production costs rise across all oil-dependent sectors → SRAS shifts left → inflation up, growth down. For India, the terms of trade deteriorate because the import price index (dominated by oil) rises while export prices are largely unchanged, so the ratio falls.

The counter-argument a good candidate raises is about price elasticity of supply (PES). Saudi Arabia and other OPEC+ producers hold spare capacity, and if the damage is temporary and quickly repaired, the supply shock may be short-lived — the price spike could reverse within days. The figures we have cover one day of market reaction, so calling this a sustained shock would be premature. For India, the RBI faces a genuine dilemma: raising rates to defend the rupee and contain imported inflation risks slowing an economy that is already navigating global uncertainty, while doing nothing risks a wage-price spiral if fuel subsidies are passed through. This story is excellent for an Economics HL Paper 1 question on supply shocks and macroeconomic objectives, or as the commodity-market context in an IA on Indian inflation. It also continues the Hormuz Oil Risk thread. Reflective question: if the RBI intervenes to stabilise the rupee by selling foreign-exchange reserves, does that actually address the underlying terms-of-trade problem, or does it just delay the adjustment?

This is Economics HL, the international trade unit — specifically protectionism and the theory of retaliatory tariff spirals. A tariff is a tax on imports; Canada's new duties raise the domestic price of US goods in Canada, reducing the quantity demanded of those imports (the effect depends on the price elasticity of demand for each category — steel with few substitutes will see less volume reduction than consumer electronics). The retaliatory dynamic is the key analytical point: when Country A imposes a tariff, Country B retaliates, Country A escalates, and both countries end up inside their production possibility frontiers — producing goods they are not comparatively efficient at making, because the tariff has distorted the price signal that comparative advantage relies on. The diagram to draw is a standard tariff diagram: domestic price rises above world price by the tariff amount, consumer surplus falls, producer surplus rises, government gains tariff revenue, but the net deadweight loss triangles show that the combined loss to consumers exceeds the gains to producers and government.

The important evaluation here is the terms-of-trade argument for a tariff: a large country like the US can, in theory, improve its terms of trade by imposing a tariff that forces the foreign exporter to lower their price. But this only works if the other country does not retaliate — and Canada clearly has. Once retaliation occurs, both countries' terms of trade deteriorate and the theoretical gain evaporates. Prime Minister Carney's strategy appears to be using the tariffs as bargaining leverage rather than as a permanent trade policy, which is a different calculation. For India, the indirect effect is worth watching: if US-Canada trade volumes fall, global steel and aluminium supply could shift, affecting Indian metal prices and export competitiveness. This story is ideal for an Economics HL Paper 2 extended response on protectionism, or an EE examining whether retaliatory tariffs achieve their stated objectives. Reflective question: if both countries lose from a tariff war, why do governments keep starting them?

This sits in Economics HL, the macroeconomics and open-economy unit, and connects directly to interest rate parity and capital flows. The BOJ's situation is a textbook case of the tension between internal balance (keeping inflation and growth stable domestically) and external balance (managing the exchange rate and capital flows). When a central bank raises its policy rate, it increases the return on domestic assets, attracting foreign capital, which appreciates the currency — the standard interest rate transmission mechanism. Japan's case is unusual because the yen had been depreciating sharply (making imports more expensive and adding to inflation), so the BOJ faces a situation where raising rates serves both goals simultaneously: it cools any domestic overheating AND supports the yen. The GDP upward revision removes the main counter-argument against hiking — that the economy is too fragile — making a rate rise more likely.

The critical evaluation is about J-curve effects and the carry trade. For years, global investors borrowed cheaply in yen (near-zero rates) and invested in higher-yielding assets elsewhere — the classic yen carry trade. An unwinding of that trade, triggered by BOJ hikes, can cause sharp moves in asset prices globally as investors sell foreign assets and repay yen loans, appreciating the yen rapidly. The Treasury-selling data point is consistent with this unwinding already beginning. For India, a stronger yen and tighter global financial conditions typically mean FII outflows from emerging markets as the risk-free rate in developed markets rises — this would put pressure on the Sensex/Nifty and the rupee simultaneously. This story connects to the Global Bond Sell-Off 2026 thread and is excellent material for an Economics HL Paper 3 quantitative question on exchange rates, or a TOK discussion about how much central banks can actually control through forward guidance versus market expectations. Reflective question: if the BOJ raises rates and the carry trade unwinds, who bears the cost — Japanese exporters who lose competitiveness, or foreign investors who borrowed in yen?

This belongs in History HL and Global Politics — specifically the Global Politics unit on power, sovereignty, and political systems, and the historical theme of continuity and change in European democracy. The AfD's rise fits a pattern historians and political scientists call democratic backsliding — where parties that challenge liberal-democratic norms gain ground through legitimate electoral processes, creating a paradox for the institutions designed to protect those norms. The historiographical framing here is a continuity vs. change debate: is this a genuinely new phenomenon driven by post-2015 migration pressures and post-COVID economic anxiety, or is it a continuation of a long-run structural weakness in eastern German political culture rooted in the Wende (reunification transition) and the economic dislocation that followed? The evidence supports elements of both — the timing of the surge correlates with recent shocks, but the geographic pattern (consistently eastern states) suggests deeper structural roots.

The evaluation a good candidate raises is about electoral systems and representation: Germany's mixed-member proportional system means the AfD's state-level gains translate into real legislative seats and agenda-setting power, even without entering government. The firewall (Brandmauer) — the other parties' refusal to govern with the AfD — has held so far, but it becomes harder to maintain as the AfD's vote share rises. For India, the connection is indirect but worth noting: a more Eurosceptic, inward-looking Germany is a less reliable partner for the EU-India trade deal currently under negotiation, and a weakening of EU cohesion raises questions about the bloc's capacity to act as a counterweight in global governance. This story is strong material for a Global Politics HL Paper 2 on political systems and legitimacy, or a History EE on the causes of far-right resurgence in post-reunification Germany. Reflective question: if a party wins votes through democratic means but advocates policies that undermine democratic institutions, at what point — if any — does the system have legitimate grounds to restrict its participation?